Add typechecking to linting

[imnasnainaec]

Fixes #7

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This change is 

Summary by CodeRabbit

• Chores
  • Linting now runs an additional type-check step as part of the standard lint command.
  • Compiler settings updated to skip type-checking of third-party declaration files, altering how library typings are validated during builds.

[coderabbitai]

📝 Walkthrough

Walkthrough

Added a TypeScript type-check step to the lint workflow by adding a lint:typecheck script and invoking it from the main lint script; also set skipLibCheck: true in tsconfig.json.

Changes

Cohort / File(s)	Summary
Lint scripts package.json	Added lint:typecheck (runs tsc --noEmit) and updated lint script to run lint:scripts, lint:styles, and lint:typecheck.
TypeScript config tsconfig.json	Added skipLibCheck: true to compilerOptions to skip type-checking of declaration files.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 I hopped through scripts with a careful peep,
Added a typecheck to catch what creeps,
Skipped the lib noise, focused the sight,
Now lint and tsc keep our code polite. 🥕

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Add typechecking to linting' accurately describes the main change: adding a lint:typecheck script and integrating it into the lint process.
Linked Issues check	✅ Passed	The PR addresses issue #7 by adding typechecking to the lint step, causing npm run lint to fail when TypeScript errors are present in .tsx files.
Out of Scope Changes check	✅ Passed	All changes are directly related to issue #7: adding lint:typecheck script, integrating it into lint, and configuring TypeScript with skipLibCheck.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch typecheck

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